Simone Zimmermann

MarlinTPC: A common software framework for TPC development

MarlinTPC is a simulation, digitisation, reconstruction and analysis package for research and development on Time Projection Chambers. It is based on the modular Marlin framework for ILC detector development and on the LCIO event data model. The MarlinTPC package consists of more than 50 software modules, providing a flexible tool box for a large variety of TPC applications. It is designed to simulate and reconstruct data from TPCs equipped with conventional pad readout and different kinds of electronics (ADCs and TDCs), taking into account the particularities of micro pattern gas amplification (GEMs and Micromegas). Also upcoming pixellated readouts as the Timepix chip are supported.

Time projection chamber with triple GEM and pixel readout

A Time Projection Chamber with a maximum drift distance of 26 cm was equipped with a triple GEM and a high resolution pixel readout. This detector was set up in a cosmic ray test-stand and 40 000 tracks have been recorded. It was shown, that the transverse spatial resolution in dependence on the drift distance was close to the diffusion limit of single electrons. In an electron test beam with an energy of 0.5 GeV it could be demonstrated that the data show no significant dependence on the track inclination within the pad plane.